Florida’s attorney general is reviewing whether cruise line companies, including Carnival Corporation and Royal Caribbean Cruises International adequately disclosed fuel surcharges.

Attorney General Bill McCollum’s office said it has received 150 complaints from customers regarding the surcharges. The office confirmed that it is reviewing complaints about whether cruise lines can retroactively impose a fuel supplement/fuel surcharge to passengers and whether consumers were aware of surcharges at the point of sale.

Both Miami-based cruise companies announced a $5 per guest fuel charge in November and began applying them on voyages starting February 1. Both companies said the surcharge only applies to the first two guests in a stateroom on new and existing North American bookings, and will not exceed $70 per person per trip. Norwegian Cruise Line does not have a cap and is charging all its guests.